Overseam for sewed articles.



C. E. BENTLEY.

OVERSEAM FOR SEWED ARTICLES.

APPLICATION FILED AUG- I6, I916.

1328,8738 Pat ntedJune 5,1917.

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CHARLES EDWIN BENTLEY, OF NEW YORK, N. Y.

OVERSEAM FOB SEWEJ) ARTICLES.

Specification of Letters Patent.

Patented June 5, 1917.

Application filed August 16, 1916. Serial No. 115,220.

To all whom it may cancer 22:,

Be it known that I, CHARLEs EDWIN BENTLEY, a citizen of the United States, and a resident of the city of New York. in the county of New York and State of New York, have invented a certain new and useful Over-seam for Sewed Articles, of which the following is a specification.

This invention relates to an overedge or button-hole seam having purled edges or corners on both sides of the work.

The object is to form a seam of such a character that the raw or cut edges of the fabric will be well covered and so that the purled edges or corners on both sides of the work, and the edge of the seam as a whole, will have an improved appearance.

The over-seam is formed by means of twothreads one of which will be supplied by a needle which will, during successive stitches. pass the thread through the fabric at any desired distance from the edge; the other thread being interlocked at the edge of the seam with loops and strands of the first named thread which are extended from said points of passage through the fabric to the edge of the seam. The first named thread can therefore be termed a depth-stitch thread and the last named thread, an edgestitch thread. The invention consists in passing loops of the edge-stitch thread through loops of the depth-stitch thread, said loops of the edge-stitch thread being twisted so that certain strands thereof cross each other; the edge-stitch thread being also passed around certain strands of the depthstitch thread.

In the accompanying drawing:

Figure 1 is a View of the upper side of the overseam.

Fig. 2 is a view of the opposite side.

Fig. 3 is a section on the line IIIIII of Fig. 1.

Fig. 4 represents the edge of the overseam.

Fig. 5 is a perspective view, showing the overseam, and the needle for passing the depth-stitch thread through a loop of the edge-stitch thread and through the fabric.

In forming the overseam, the needle 1 forces the depth-stitch thread 2 through the layers of fabric 3 and 4 at any desired distance from the edge thereof. A loop a is then formed in thedepth-stitch thread on the lower side of the fabric, the loop being extended from the point of passage through to the edge of the fabric. The needle is then moved upward, carrying the depthstitch' thread up out of the fabric. The edge-stitch thread 5 having a loop 6 formed therein is then passed upward through the loop a, the loop I) being twisted so that certain strands forming the loop extend across each other. The purpose of twisting the loop 6 will be explained later. The twisted loop 6 of the edge-stitch thread is then temporarily moved over on the upper side of the fabric into range with the downwardly moving needle 1 carrying the depth-stitch thread '2, as shown in Fig. 5. When the parts occupy this position, the work has been fed forward, and the needle will pass the depth-stitch thread down through the loop 5, and through the fabric preparatory for the formation of a succeeding stitch. Then the needle carries the depth-stitch thread up out of the fabric and out of loop 6, tension applied to the edge-stitch thread will cause the loop. I) to be drawn back to the edge of the fabric. The loop a again being formed in the depth-stitch thread,the loop 5 again formed in the edge-stitch thread will be passed upward through the loop (6, twisted, and moved over in range with needle 1 carrying the depth-stitch thread, as previously described.

It will be seen that when loop I) is brought back from its position in range with the needle to the edge of the fabric, strands (b and 61 forming part of loop a of the depthstitch thread will extend on the upper side of the fabric from the point of passage through to the edge of the fabric, and that said strands then pass through a loop 6, where they divide one strand a passing through a loop 6 of a preceding stitch, and the other strand a passing to the needle, and finally to pass through a loop Z) of a succeeding stitch. By reference to Figs. 1

and 5'it will be seen that the loops 6 are in line with each other and that the thread 5 of which each ofthe loops 6 are formed passes around the strands a and a of each loop (1. Further, it will be seen that as strand a in passing through loop Z) of one stitch and through loop I) of a preceding stitch, becomes strand a of the preceding stitch, a loop 0 is thereby formed in the depth-stitch thread.

By reference to Figs. 3, 4 and 5, it will be seen that strands b and b forming part of the twisted loop I), are alongside of each other as they pass through the loops a, and that strand in passing through loop a of one stitch and through loop a of a preceding stitch, becomes strand 5 ofjthe-precedinv stitch, a loop 03 is thereby formed in the e ge-stitch thread Owing to the fact'that the strands 5 and 5 are alongside of each other,tension applied to edge-stitch thread 5 causes the loops a and 0 to be brought very close together thereby tending to obscure the strands b b and together with said strands serving to cover the edge of the fabric and improve the appearance of the edge of the seam, By reference toFigs. 2 and 4 it will be seen that looped overlap each other thereby'producing a purl edge or corner more resembling hand work than that shown in Fig. 1; I do not wish to limit myself to passage of the thread 5 past the edge of the fabric while interlocking with loopsof thread 2, it being within the scope of my invention to pass the thread 5 through the fabric while interlocking with loops of thread 2 on opposite sides of the fabric. 7

Having described my invention, what I claim is: 1

1. The herein described .overseam, comprising the combination with suitable fabric, of a depth-stitch thread passing through the fabric and having loops extended to the edge of the fabric on both faces of the latter; an

edge-stitch thread having loops. passed through certain of saidlo'ops of said depthstitch thread,said loops of the edge-stitch thread being twisted so that certain strands thereof cross each other; and said edgestitch thread being also passed "around certain strands of said loops of the depth-stitch thread extending to the edge of the fabric the edge-stitch thread causes said loops of thedepth-stitch thread on both faces of the fabric to be drawn close to each other at the edge. of the overseam.

3. The herein described overseam, com prising the combination with suitable fabric of a depth-stitch thread which is passed in loops through the fabric during successive stitches, said loops being extended to the edge of the fabric on the lower side thereof; an edge-stitchthread having loops passed through said loops of the deptlrstitch thread previous to the time said loop of the depth-stitch thread is passed through and extended to the edge of the fabric on the lower side thereof, preparatory to the passage through said loop of said loop of the edge stitch thread forming part of a succeeding'stitch, substantially as and for the purpose specified.

4E; The herein described overseani, comprising the-combination with suitable fabric, of a depth-stitch thread passing through the fabric and having loops extended to the edge of the fabric on both faces of the latter; an edge-stitch thread having loops passed through the lower loops of said depth-stitch thread; and said edge-stitch thread being also passed around certain strands of said loops of the depth-stitch thread extending to the edge of the fabric on both faces thereof. Y I

5. A seam comprising a fabric, a thread 2, and a thread 5, the thread 2 passing through the fabric in a series of loops and the thread 5 passing through the fabric, or

past the edge thereof in a series of loops,

each loop of the thread 5 being twisted a quarter turn; each loop of the thread 2 being passed through one of said twisted loops of the thread 5 before passing through the CHARLES EDWIN BENTLEY.

Gcpies of this patent may be obtained fol five cents each, by addressing the Commissioner of Patents,

Washington, D. G.

thread, said loops of the edge-stitch thread 

